Steam-engine



3 Sheets-Sheet 2. E. TANDLER.

(No Model.)-

STEAM ENGINE.

Patented May ZZ -l8 8 3v.

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(No Model.) s Sheets-Sheet 3. E. TANDLE'R.

STBAM'ENGINB.

No. 278,062. Patent-ed May 22,1883.

ATTORNEY I UNITED STATES PATENT OFFICE.

EDUARD TANDLER, OF GRAND RAPIDS, MICHIGAN.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 278,062, dated May 22,1883.

Application filed February .16, 1883. (No model.)

To all whom it may concern Be it known that I, EDUARD TANDLER, of GrandRapids, county of Kent, and State of Michigan, have invented certain newand useful Improvements in Steam-Engines, of which the following is aspecification.

This invention has reference to an improved construction ofsteam-engines, in which the valve-chest and the steam admissionandexhaust valves are arranged close to the steamports of the cylinder,and thereby the size of the valve-chest reduced, so that a smaller quantity of steam is required for filling the'chest at each revolution ofthe driving-shaft, and consequently the engine can be run at aconsiderable saving of steam.

In the accompanying drawings, Figure 1 represents a vertical transversesection of a steamcylinder with my improved valves and valvechest. Fig.2 is a side elevation of the same with the covering-plates of thevalve-chest removed, so as to show the steam-ports. Fig. 3 is a detaillongitudinal section through the steam-cylinder and admission-port online mm, Fig. 2. Figs. 4, 5, and 6 are details of a cut-oft slide-valvefor the admission, and Figs. 7, 8,

' and9are details of a slide-valve for the exhaust steam.

Similar letters of reference indicate corresponding parts.

A in the drawings represents a steam-cylinder, which is supported onupright standards A. The steam-cylinder A is provided at one side and ateach end with a horizontallypartitioned steam-chest, B, that is closedby a covering-plate, B. The valve-chest B is cast withinwardly-projecting portions 1) b, which approach close to thesteam-ports a a of the cylinder, and are provided with a valve-seat, d,for the steam-admission valve 0, and with a" valve-seat, d, for theexhaust-valve D. The steam admission and exhaust valves 0 and D andtheir seats 61 d are inclined toward a horizontal plane that passesthrough the axis of the steam-cylinder A, and are thereby located 'closeto the steam-ports. The valves 0 and D take up, therefore, less space,so that the valve-chest B can be reduced in size, as compared to thesteam-chests of the ordinary slidevalve engines. The valve-chest B issecured to flanged seats a of the cylinder A, and the interior space ofthe same almost entirely taken up by the steam-valves O and D,so as toleave but a small space around the same to be filled by steam. The seat01 of the steam-admission valve G is located at one side of theprojection 11 of the valve-chest away from the cylinder, while the seat(1 and the exhaust-valve D are arranged at the other side of theprojection b nearer to the cylinder, as shown clearly in Fig. 1. 1

I prefer to use for admitting the steam the cut-ofl' slide-valve shownin detail in Figs. 4, 5, and 6, and for exhausting the steam the valveshown in Figs. 7, 8, and 9. In place of the same, steam admission andexhaust valves of any approved construction maybe used, as

I do not confine myself to the specific construction shown,

Thevalve-chests B B of the cylinder A are connected by horizontalsteampipes B B of which the upper pipe, B forms the admission, and thelower pipe, B, the exhaust pipe. The pipes B B are connected by a valvedvertical pipe, 0, of smaller diameter, which serves for the purpose ofadmitting steam to the exhaustpipe 13 and keeping the same warm duringthe time when the engine is not running, by which an equal expansion andcontraction of the valve-chest and cylinder is secured.

The water of condensation is drawn ofif at both ends of the steam-cylinder A through holes f, provided with exterior.water-cocks, f. Theexhaust-port a is extended toward the lowest point of the cylinder, fromwhich point a downwardly-inclined surface, f sheds the water ofcondensation to the holef, as shown in Fig. 1. By this arrangement thesize of the exhaust-port is not only increased and the steam permittedto escape more freely, but also the water of condensation readily drawn011' through the water-cooks to the outside.

The water-cocks are arranged at the inner side walls of the valve-chestsB B, as shown in Fig. 2, so that the opening of the cooks f f. isconveniently accomplished-by turning both cocks at the same time, andthus the water of condensation. discharged quickly from both ends of thecylinderiat the same time.

The essential feature of my invention is the inclined arrangement of thesteam admission and exhaust valves toward the steam-cylinder, wherebythey are brought closer to the steamports, the size of the steam-chestis reduced,

and consequently a smaller quantity of steam required for eachrevolution of the engine, so that the same can be run with less steamand at a considerable saving in fuel.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination of a steam-cy1inder,provided withflanged seats a? and induction and eduetion ports a a, a longitudinallypartitioned valve-chest provided with inward projections b I), provided,respectively, with outward valve-seats, cl, and inward valve-seats, d,and steam admission and exhaust valves arranged upon said seats at asuitable inclination to and at opposite sides of a plane passing throughthe axis of the cylinder, substantially as described.

2. In a steam-engine, the combination of steam-cylinder A, valve-chestsBB, steam supply and exhaust pipes B 13, connected by a valved pipe, e,so as to admit steam to the exhaust-pipe when the engine is not running,and provide for the equal expansion of the valve-chests and cylinder,substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname in pres ence of two subscribing witnesses.

EDUARD TANDLER.

VVi tnesses:

KARL KALKBENER, FREDERICK LOETIGERT.

